vector

Documentation

Overview

package font converts an OpenType font into a form usable for engraving.

Index

• Constants
• type Face
  • func NewFace(data []byte) *Face
  • func (f *Face) Decode(ch rune) (int, Segments, bool)
  • func (f *Face) Metrics() Metrics
• type Glyph
• type Metrics
• type Segment
• type SegmentOp
• type Segments
  • func (s *Segments) Next() (Segment, bool)

Constants

const (
	IndexElemSize = 1 + 2 + 2

	OffSegments = offIndex + indexLen*IndexElemSize
)

Types

type Face

type Face struct {
	// contains filtered or unexported fields
}

func NewFace

func NewFace(data []byte) *Face

func (*Face) Decode

func (f *Face) Decode(ch rune) (int, Segments, bool)

func (*Face) Metrics

func (f *Face) Metrics() Metrics

type Glyph

type Glyph struct {
	Advance    int8
	Start, End uint16
}

type Metrics

type Metrics struct {
	Ascent, Height int8
}

type Segment

type Segment struct {
	Op  SegmentOp
	Arg image.Point
}

Segment is like sfnt.Segment but with integer coordinates.

type SegmentOp

type SegmentOp uint32

const (
	SegmentOpMoveTo SegmentOp = iota
	SegmentOpLineTo
)

type Segments

type Segments struct {
	// contains filtered or unexported fields
}

Segments is an iterator over a glyph's segments

func (*Segments) Next

func (s *Segments) Next() (Segment, bool)